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Elastic laminate including nonwoven layer formed from highly-oriented-component fibers and disposable garment employing the same

Inactive Publication Date: 2005-04-12
THE PROCTER & GAMBLE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This step is additional to normal elastic lamination processes and gives limitations to materials to be used in the elastic laminate.
For example, the elastomeric material and other composite material(s) used in the elastic laminate need to have enough physical strength or toughness since those materials tend to be mechanically damaged by the process.
If the elastomeric material, for example, does not have enough strength or toughness, the elastomeric material tends to be easily shred or tom by the stress which is applied to the elastomeric material during the mechanical stretching in the manufacturing process and during the use of products.
For example, those materials tend to decrease elastic “stretchiness” of the stretchable ear panels during use.

Method used

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  • Elastic laminate including nonwoven layer formed from highly-oriented-component fibers and disposable garment employing the same
  • Elastic laminate including nonwoven layer formed from highly-oriented-component fibers and disposable garment employing the same
  • Elastic laminate including nonwoven layer formed from highly-oriented-component fibers and disposable garment employing the same

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Embodiment Construction

All cited references are incorporated herein by reference in their entireties. Citation of any reference is not an admission regarding any determination as to its availability as prior art to the claimed invention.

Herein, “comprise”, “include” and “have” mean that other element(s) and step(s) which do not affect the end result can be added. These terms encompass the terms “consisting of” and “consisting essentially of”.

Herein, “gf” stands for gram force.

Herein, “joined” or “joining” encompasses configurations whereby an element is directly secured to another by affixing the element directly to the other element, and configurations whereby the element is indirectly secured to the other element by affixing the element to intermediate member(s) which in turn are affixed to the other element.

Herein, “layer” does not necessarily limit the element to a single stratum of material in that a layer may actually comprise laminates or combinations of sheets or webs of materials.

Herein, “nonwove...

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Abstract

The present invention is directed to an elastic laminate which is elastically extensible in at least one direction. The elastic laminate includes an elastomeric material having a first surface and a second surface opposing the first surface; and a first nonwoven layer joined to the first surface of the elastomeric material. The first nonwoven layer is formed from component fibers having a primary fiber direction. The first nonwoven layer has a Fiber Orientation Ratio within about ±20 degrees from a primary fiber direction of at least about 65%. The present invention is also directed to a disposable garment employing such an elastic laminate.

Description

FIELDThe present invention relates to elastic laminates. More specifically, the present invention relates to elastic laminates which includes a nonwoven layer formed from highly oriented component fibers. The present invention also relates to disposable garments employing such elastic laminates. Examples of such disposable garments include disposable underwear, disposable diapers including pull-on diapers and training pants, and disposable panties for menstrual use.BACKGROUNDElastic laminates have previously been used in a variety of disposable products, including sweat bands, bandages, body wraps, and disposable garments including disposable diapers and incontinence devices. Herein, “elastic laminate” refers to an elastically stretchable two or more layered materials including at least one elastically stretchable single layer material. It is generally expected that these products provide good fit to the body and / or skin of the user by using suitable elastic members during the entir...

Claims

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Application Information

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IPC IPC(8): B32B18/00D04H1/00A61F5/44A61F13/15A61F13/494A61F13/49A61F13/496A61F13/511B32B25/10B32B37/14D04H1/42D04H13/00
CPCA61F13/49012B32B25/10B32B37/144D04H13/00A61F13/49015A61F13/4902B32B2305/20A61F5/44B32B2307/51Y10T442/60Y10T442/129Y10T442/601Y10T442/602
Inventor REZAI, EBRAHIMMIZUTANI, YOKOOHNISHI, KAZUYUKI
Owner THE PROCTER & GAMBLE COMPANY
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